speedometer interchange information? - JeepForum.com

 
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post #1 of 12 Old 03-25-2013, 12:50 PM Thread Starter
Jenyus425
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speedometer interchange information?

so im putting a toyota transmission and transfercase in my 4.0 YJ. i know that the 4.2 yjs used a cable driven speedometer.

i have 2 questions
1. I know some people have swapped over to toyota cases, how are you running your speedometer/odometer?

2. will a 4.2 speedometer replace a 4.0 speedometer without modifying the gauge cluster?

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post #2 of 12 Old 03-26-2013, 06:29 PM Thread Starter
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bumpppppp
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post #3 of 12 Old 03-28-2013, 12:33 PM
Siva283
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The speedo reads from the transfer case not the engine. So yes a 4.2 speedo a 4.0 speedo and a 2.5 speedo are the same speedo's

1995 YJ. 2 inch BDS Spring lift. 1 inch shackle lift. 1.25 inch JKS Body Lift 33x12.5x15's. Engo 10,000 pound winch.

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I gave the Jeep the required offering of $$, sweat, and blood, and everything works fine now. -- Jim
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. It started with a $200 axle, and a few thousand dollars later I was done :)
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diagnose the real issue before you start going all Obama on it - spending mad cash you'll need for other important things.

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this is also my second set of RC springs this year. I'd rather spend the money again and get something that will last.
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post #4 of 12 Old 03-28-2013, 02:31 PM Thread Starter
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Quote:
Originally Posted by Siva283 View Post
The speedo reads from the transfer case not the engine. So yes a 4.2 speedo a 4.0 speedo and a 2.5 speedo are the same speedo's
no thats not correct. 4.2 era wranglers had a cable driven speedo. 4.0 era wranglers have a speed sensor
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post #5 of 12 Old 03-28-2013, 02:36 PM
Siva283
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No it was cable driven through 91. In 92 the electronic speedos started. So I will be more precise. 4.2, 4.0, and 2.5 up to 91 are all the same. 91 had a cable driven speedo and an electronic sensor for the ECM. The speedo itself is still the same though. If you want to verify this just look up part numbers on your fav auto parts store website.

1995 YJ. 2 inch BDS Spring lift. 1 inch shackle lift. 1.25 inch JKS Body Lift 33x12.5x15's. Engo 10,000 pound winch.

Quote:
Originally Posted by Magnum View Post
I gave the Jeep the required offering of $$, sweat, and blood, and everything works fine now. -- Jim
Quote:
Originally Posted by ldso View Post
. It started with a $200 axle, and a few thousand dollars later I was done :)
Quote:
Originally Posted by Luuca View Post
diagnose the real issue before you start going all Obama on it - spending mad cash you'll need for other important things.

Ask me how I know...
Quote:
Originally Posted by Overhead View Post
this is also my second set of RC springs this year. I'd rather spend the money again and get something that will last.
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post #6 of 12 Old 03-28-2013, 02:58 PM Thread Starter
Jenyus425
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Ah I see now that I was wrong, thanks! So I could, theoretically use whatever sensor that's used and just figure out a way to adapt the cable and still use my stock 93 speedo?
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post #7 of 12 Old 03-28-2013, 03:20 PM
Siva283
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Quote:
Originally Posted by Jenyus425 View Post
Ah I see now that I was wrong, thanks! So I could, theoretically use whatever sensor that's used and just figure out a way to adapt the cable and still use my stock 93 speedo?
No the speedo gear is different I'd I am not mistaken

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1995 YJ. 2 inch BDS Spring lift. 1 inch shackle lift. 1.25 inch JKS Body Lift 33x12.5x15's. Engo 10,000 pound winch.

Quote:
Originally Posted by Magnum View Post
I gave the Jeep the required offering of $$, sweat, and blood, and everything works fine now. -- Jim
Quote:
Originally Posted by ldso View Post
. It started with a $200 axle, and a few thousand dollars later I was done :)
Quote:
Originally Posted by Luuca View Post
diagnose the real issue before you start going all Obama on it - spending mad cash you'll need for other important things.

Ask me how I know...
Quote:
Originally Posted by Overhead View Post
this is also my second set of RC springs this year. I'd rather spend the money again and get something that will last.
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post #8 of 12 Old 04-01-2013, 10:59 AM
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Go to junkyard and get an old toyoya apwwd cable. Cut the wms off the onner cable and solder to jeep cable, cut the nut off that screws to tranamission ans attach it to jeep cable
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post #9 of 12 Old 04-01-2013, 11:24 AM Thread Starter
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What do you mean by apwwd and wms?
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post #10 of 12 Old 04-01-2013, 12:22 PM
ratmonkey
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Misspelling.

The mount hole and dimensions for the gear depth are the same since before the early 80's across many brands. Most bbrands actually, I believe.

'97 zj 5.2, some stuff, some other suff, and some things that even work sometimes.

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post #11 of 12 Old 04-01-2013, 02:44 PM Thread Starter
Jenyus425
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Okay cool that makes sense. I just bought a 77 cluster on eBay, speedo looks to be about the same size or close at least. Well see how it works! Thanks guys!
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post #12 of 12 Old 04-14-2013, 03:32 PM Thread Starter
Jenyus425
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seems to have worked!

77 toyota speedomeeter on righ jeep on left. they have almost exactly the same speed range so it should work perfectly.



mechanisms similar in size



looks factory! only difference is the yota doesnt have a trip meter, so i covered up the other slot. I clamped the two together and redrilled the jeep face for the toyota holes. everything is toyota except for the face


cant even tell



back dremeled out

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